There is more than one artist with this name. 1) Nightmare is a Japanese visual rock band Naitomea, see ナイトメア. 2) Nightmare is a French Power Metal band from Grenoble formed in 1979. 3) Nightmare is a Japanese hardcore punk band. 4) Nightmare is an Italian progressive metal band. 5) Nightmare is a Serbian rapper. 6) Nightmare is a Polish thrash/speed metal band from Kutno, Łódzkie. Active from 1988 to 1998. Reunited for a short time in 2010. Read more on Last.fm